Popsugar Celebrity Olivia Newton-John John Travolta Olivia Newton John at Grease Event August 2018 John Travolta and Olivia Newton John Recreate Their Grease Dance Moves on the Red Carpet 17 August 2018 by Quinn Keaney Image Source: Getty Grease turns the big 4-0 this year, and what better way to celebrate the iconic musical's anniversary than with a sweet reunion of its stars? Olivia Newton John and John Travolta hit the red carpet at The Academy Presents Grease 40th Anniversary event at LA's Samuel Goldwyn Theatre on Wednesday, where they immediately embraced and busted out a few of their dance moves. They also snapped a few selfies with fellow guests and chatted up Mario Lopez, who arrived on a pair of crutches. This definitely isn't the first time they've shared an adorable reunion this year, however — the pair actually linked up back in January at the G'Day Black Tie Gala, where they enjoyed a few laughs (and gave us a heavy dose of nostalgia). Although we're not sure if they discussed THAT chilling Grease theory, it certainly looks like they had a blast. Take a look at all the photos of their outing ahead! Related: John Travolta Has Finally Addressed That Bone-Chilling Grease Fan Theory Image Source: Getty / Jon Kopaloff 1 / 14 Image Source: Getty / Alberto E. Rodriguez 2 / 14 Image Source: Getty / Jon Kopaloff 3 / 14 Image Source: Getty / Alberto E. Rodriguez 4 / 14 Image Source: Getty / Alberto E. Rodriguez 5 / 14 Image Source: Getty / Jon Kopaloff 6 / 14 Image Source: Getty / MARK RALSTON 7 / 14 Image Source: Getty / Alberto E. Rodriguez 8 / 14 Image Source: Getty / Jon Kopaloff 9 / 14 Image Source: Getty / Alberto E. Rodriguez 10 / 14 Image Source: Getty / Alberto E. Rodriguez 11 / 14 Image Source: Getty / Alberto E. Rodriguez 12 / 14 Image Source: Getty / Alberto E. Rodriguez 13 / 14 Image Source: Getty / Steve Granitz 14 / 14 Olivia Newton-JohnCelebrity FriendshipsNostalgiaGreaseJohn Travolta